let's dig deeper with former ambassador to the united nations, bill richardson. i traveled with him to north korea exactly two years ago. ambassador, you have been to north korea a few times. what's the motive here, what are the north koreans trying to achieve? >> well, anybody that speaks with certainty about north korea totally unpredictable state, here are three scenarios that i potentially see. one, the new leader, kim jong-un wants to send a message domestically that he presides over a powerful military and space operation. secondly, that that space launch failed and this one will not. another reason might be the presidential elections in south korea, which are december 19th. maybe they want to influence or disrupt them. the third is the traditional north korea action to get attention. here we are. we've been out of the headlines, middle east, gaza, rockets there, we're back. and this is what we're capable of doing. those are the three potential reasons that i see. one most likely being kim jun jung-il. he wants to show his people that he governs a powerful